Later on Tuesday evening, strong winds -- which National Weather Service reports said may have been a tornado, though local police said they were more likely the result of potent straight-line winds -- caused damage near Waterford, Pennsylvania. This northwestern Pennsylvania town is about 15 miles south of Erie.

"The damage occurred from debris. Tree limbs at a height of 10 to 20 feet were broken and they damaged the roofs of the mobile homes," said David Butt, director of the Sangamon County Office of Emergency Management. "No roofs were torn off. No roofs were peeled back. The only damage to roofs was being penetrated by wind-blown debris."